Pipe-wrench and shifting spanner.



N0- 803,39'7. PATENTED 001131. 1905. R. M. CARROLL.

PIPE WRENCH AND SHIFTING SPANNER.

APPLIGATION FILED JUNE ze, 1905.

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PATENTBD OCT. 31, 1905.

R. M. CARROLL. PIPE WRENCH AND SHIPTING SPANNER.

APPLICATION FILED JUNE 26, 1905.

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No.'803,397. PATBNTBD OCT. 3l, 1905.

. B. M. GARROLL. PIPE WRENCH AND SHIFTING SPANNER.

APPLICATION FILED JUNE 26, 1905.

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No. 803,397. PATLNTLD 00T'. 31, 1905.

R. M. CARROLL.

PIPE WRENCH AND SHIFTING SPANNER.

APPLICATION FILED JUNE ze, 1905.

4 SHEETS-SHEET 4.

UNITED sTATEs PATENT OFFICE.

PIPE-WRENCH AND SHIFTING SPANNER.

Specification of Letters Patent.

Patented Oct. 31, 1905.

Application filed June 26, 1905- Sllhl N0. 267,158-

To all whom t may concern:

Be it known that I, RICHARD MICHAEL CAR- ROLL, a subject of His Majesty the King of Great Britain and Ireland, residing in Mabel street, Petone, in the Provincial District of Vllellington, in the Colony of New Zealand, haveinvented certain new and useful Improvements in Pipe-Wrenches and Shifting Spanners, of which the following is a specification.

The invention relates to tools designed to fulfil the dual purpose of pipe-wrench and shifting Spanner, and provides a tool of such nature having the following characteristics: Easy and simple adjustment, perfect release, durability and non-liability to derangement, easy control of the grip of the jaws and release thereof.

According hereto a metal frame is shaped at its lower end to serve as a handle and at one side of its upper end is formed into a lower grip-jaw or has such a jaw connected to or inserted in it. The upper grip-jaw projects at right angles from a stem which has rack-teeth upon its front edge, the lower end of said stem being shaped to form a handle. The stem passes through the frame referred to and the teeth upon it are adapted to engage in correponding recesses formed in a metal keep carried within a recess in the frame and curved at its upper end to a radius struck from a point near the middle of the frame. The recess is so shaped that the keep may oscillate therein, so that when the handles are drawn together the jaws close upon the object to be turned and when the grip upon the handles is released the upper jaw moves apart from the lower and disengages the object. Within the frame upon the back edge of the stem is a slidable bearing-piece, a part of the back of which is curved to a radius struck from the point previously referred to. A spring within the frame normally tends to press the bearing-piece against the back of the stem and the hearing-piece has a stud projecting through a slot in the frame, whereby the bearing-piece may be drawn down to permit of the free movement of the stem for adjustment of the jaws.

Referring to the accompanying drawings, Figure l is a side elevation. Fig. 2 is a central side sectional elevation. Fig. 3 is a side perspective view of a metal keep. Fig. A is a similar view of a slidable bearing-piece. Fig. 5 is a similar view to Fig. 4, but showing the bearing -piece with an operating-tailpiece. Figs. 6 to l0, inclusive, are views showing a modification, Fig. 6 being a side elevation,

Fig. 7 a vertical side sectional elevation, Fig. 8 a sectional plan on A A, Fig. 7, Fig. 9 a side perspective elevation of an oscillating keep, and Fig. l0 a similar View of the slidepiece. Figs. 1l to l5 show another modification, Fig. l1 being a side elevation, Fig. 12 a side central sectional elevation, Fig. 13 a section on B B, Fig. l2, Fig. 14 an end perspective elevation of a keep, and Fig. 15 an end perspective elevation of a slide-piece and operating-disks. Fig. 16 is a side elevation; Fig. 17, a vertical central sectional elevation; Fig. 18, a side perspective elevation of the keep, and Fig. 19 a side perspective elevation of a slide-piece.

Referring first to Figs. l to 5, the metal frame l is shaped at its lower end to form a handle 2 and has riveted within it the part of the lower grip-jaw 3, having the serrated face 4. The stem 5 passes through the frame and has the upper grip-jaw 6, having teeth 7, its lower end formed to serve as a handle 8 and rack-teeth 9 upon its front edge. The keep 10 has teeth l1, corresponding with the teeth 9 upon its inner face, and its back is formed to a radius, the center of which approximates to the point 12. The back or outside part of the keep fits into a recess formed in the part 14 of the lower grip-jaw, which is inserted and riveted in the frame. The recess is so formed that any pressure upon the upper jaw of the stem will not displace the keep from the recess. A projecting tailpiece 13 is integral with and extends beyondv the curved portion of the keep and between the stem and the part 14 of the lower grip-jaw. A rivetpin l5 passes through an arc-shaped slot 16 in the keep, and while it permits a certain amount of rotative movement to the keep prevents it from moving out from the recess in the frame. The slide-piece 17 works within the frame against the edge of the stem 5 opposite to the keep and is kept against said .edge by a spring 18, secured in the handle 2 by rivet 19, said spring also serving to normally force apart the handles 2 and 8. The slide-piece is adapted to fit at its upper end into a space 20, provided between the back of the stem and the frame and when in that position prevents the teeth 9 from coming out of engagement with the teeth l1.

When the slide-piece is in the position shown in the drawings, the tooth upon the stem may be moved out of engagement with the teeth upon the keep, and the stem may be readily moved through the frame to adjust IOO IIO

the distance between the upper and lower jaws. This adjustment may be facilitated by turning the tool upon its back, so that the weight of the stem assists in drawing it away from the keep. A roughened surface 21 is provided upon the face of the stem below the teeth for convenience in adjusting the tool by the thumb of the operator. The slide-piece is operated by a knob 22, which projects through a slot 23 in the side of the frame.

When the tool is to be used, the slide-piece is moved up into the recess 20, and by draw- 1 ing the handles 2 and 8 together the article to be operated upon is gripped between the teeth 7 and 4.

To release the article, the handles are allowed to spread apart, which they are able to do on account of the keep 1() turning in its recess about the point 12.

The frame 1 clears the slide-piece below the dotted lines shown in Fig. 2, and the slidepiece has a curved face 24, formed to a radius struck from the point 12, said face turning upon the inside face 25 of the back of the frame and permitting free movement of the jaw when the handles are drawn together by or released from the grip of the operator, the keep, stem, and back piece all oscillating together.

Figs. 3 and 4, respectively, show the keep and slide-piece removed from thc frame.

Fig. 5 shows the slide-piece constructed with an integral tail 26. This may be used in substitution for or in addition to the knob 22 and for the same purpose-viz., to slide the slide-piece.

Wire springs 39 and 40 (clearly shown in Figs. 3, 9, 13, and 14) are carried in recesses formed upon each side of the keep, the ends of said springs are bent at an angle of about ninety-five degrees and take into holes formed in the keep.l the springs are arranged to bear against the sides of the frame and prevent the keep from following the stem when the latter is being' moved away.

When the tool is in use as a fixed wrench, the tailpiece 13, fitting against the inserted part 14 of the lower grip-jaw in conjunction with the slide-piece 17, takes all the strain of the stem.

Referring now to Figs. 6 to 10, the saine figures of reference are used to indicate all the parts which are constructed in the manner described in reference to Figs. 1 to 5.

The modifications consist in making the keep with an integral back piece 27, connected to the part 10, previously described, by a side piece 28. This back piece is formed to a curve struck from the point 12, previously referred to, and fits a corresponding recess 29 in the frame. The slide-piece 17 fits in a recess 30 between the stem and said back piece, and when the tool is in use the slide-piece in the recess maintains the teeth of the stem in the teeth of the keep. When the grip of the handles is released by the operator, the jaws spread apart by reason of the spring 18, previously referred to, the movement being permitted by the keep and the back piece which turn in their recesses upon the center from which their curves are struck.

An operating-knob 22 is employed upon the slide-piece and works through aslot 23 in the frame.

Fig. 3 is a sectional plan on A A and shows the relative positions of the parts, and Fig. 9 shows the keep and back piece removed. The slide-piece, as clearly shown in Fig. 10, is formed with a side 31, which extends upon the side of the stem and maintains said slidepiece in position in the frame.

Referring now to Figs. 11 to 15, inclusive, which show a modication and in `which the parts similar lto those previously referred' to are indicated by the same reference-figures, the stem 5 has a longitudinal slot 32, which receives a sided piece 33, working through said slot, and, as clearly shown in Fig. 15, having operating-disks 34 and 35, one upon each end, said disks working in corresponding slots 36 and 37, formed in the frame. A bridge-piece 38 connects the disks 34 and 35, and the slots 36 and 37 are so formed that when the disks are moved forwardly within them l the stem is moved and the teeth upon it engage with the teeth of said keep. When the disks are moved rearwardly, the direction of the slots 36 and 37 causes the sided piece 33 to draw the stem out of engagement with the teeth of the keep. A spring 18, as previously referred to, rests upon the bridge-piece 38 when the. latter is in one position; but when said bridge is moved forwardly the spring bears upon the back edge of the stem. Springs 39 and 40, similar to those described in reference to Fig. 3, are employed for the same purpose.

It will be seen that the operation ofthe span-V ner is similar to those previously described, but pressure comes partly upon the disks and upon the slots in which they are carried instead of wholly upon the keep and recess in which it is carried.

Afurther modification is illustrated in Figs. 16 to 19, inclusive, the parts similar to those previously referred to being indicated by the same reference-figures. In this arrangement the keep 10 has the disk-trunnions 44and 45,

fitting into corresponding circular holes in the frame of the tool. The slide-piece 17, having a knob 22, is employed in the same manner as described in reference to the previous views. It will be seen that in this arrangement the keep oscillates upon the trunnions in order that the jaws may release the article when grip upon the handles is released.

VVhatI do claim, and desire to secure by Letters Patent of the United States, is-

1. For the purpose indicated in combination a frame a grip-jaw at its upper end and IIO ISO

an integrally-formed handle at its lower end, a keep having serrations on its inner face carried within and adapted to oscillate in said frame a stem passing through said frame having an integrally-formed grip-jaw upon its upper end and a handle at its lower end, serrations upon the inner edge of said stem, a slide-piece working within said frame operable to move said stem and bring the serrations thereon into engagement with the serrations in the keep, and a spring between the handle of the frame and the handle of the stem tending to force them apart, the keep and slide-piece oscillating with the stem, substantially as and for the purposes herein specified and illustrated.

2. A tool for the purpose indicated comprising in combination a frame having a grip-jaw at its upper end and a handle at its lower end, a keep having serrations on its inner face and a curved back adapted to work in a corresponding recess in the frame, means for limiting the movement ofsaid keep, a stem passing through said frame having a jaw upon its upper end and a handle upon its lower end, serrations upon the inner edge of said stem,a slide-piece operable within said frame to move the stem and bring the teeth thereon into engagement with the teeth of said keep, said slide-piece being adapted to oscillate with the stem and with the keep and spring means for spreading apart the said handles of the frame and stem, substantially as and for the purposes herein speciiied and illustrated.

3. Atool for the purpose indicated comprising in combination a frame having a grip-jaw at its upper end and a handle a't its lowerend, a keep havingserrations on its inner face and a curved back adapted to work in acorresponding recess in the frame, means for limiting the movement of said keep to prevent it leaving the recess, a tailpiece projecting from said keep, a stem passing through said frame having ajaw upon its upper end and a handle upon its lower end serrations upon the inner edge of said stem, a slide-piece operable within said frame to move the stem and bring the teeth thereon into engagement with the teeth of said keep, said slide-piece being adapted to oscillate with the stem and with the keep and spring means for spreading apart the said handles of the frame and stem, substantially as and for the purposes herein specified and illustrated.

4. A tool for the purpose indicated comprising in combination a frame having a grip-jaw at its upper end and a handle at its lower end, a keep having serrations on its inner face and a curved back adapted to work in a corresponding recess in the frame, means for limiting the movement of said keep to prevent it leaving the recess, a stem passing through said frame having a jaw upon its upper end anda handle upon its lower end, serrations upon the inner edge of said stem, a slide-piece having a knob projecting through a slot in said frame and operable to move the stem and bring the teeth thereon into engagement with the teeth of said. keep, said slide-piece being adapted to oscillate with the stem and. with the keep, and spring means for spreading apart the said handles of the frame and stem substantially as and for the purposes herein specified and illustrated.

5. Atool for the purpose indicated comprising in combination a frame having a grip-jaw at its upper end and a handle at its lower end, a keep having serrations on its inner face and a curved back adapted to work in acorresponding recess in the frame, means for limiting the movement of said keep to preventit from leaving the recess a stem passing through said frame having a jaw upon its upper end and a handle upon its lower end, serrations upon the inner edge of said stem, a slide-piece operable in said frame to move the stem and bring the teeth thereon into engagement with the teeth of said keep, said slide-piece being adapted to oscillate with the stem and with the keep, a spring secured at one end to the handle of the frame and bearing at its other end upon the slide-piece, substantially as and for the purposes herein specied and illustrated.

In testimony whereof l have signed my name to this specification in the presence of two witnesses.

RICHARD MICHAEL CARROLL.

Witnesses:

E. P. ODONNELL, K. WrLsoN.- 

